19. Orthetrum triangulare triangulare (Selys)

Libella triangularis Selys, 1878, Mitt. Zool. Mus. Dresden: 314.

Orthetrum triangulare (Selys): Kirby, 1885, Proc. Zool. Soc. London: 327.

Orthetrum triangulare triangulare (Selys): Ris, 1909, Collections Zool. du Baron E. de Selys-Longchamps, 9: 181; Fraser, 1936, Fauna British India, Odonata, 3: 305.

Specimens examined: India: Arunachal Pradesh: Saparguri, Kimmins, 3 ♂, 9. xi.1975, K. R. Rao Tahlia . 1 ♂, 20. xi.1975, K. R. Rao. Mizoram: Bank of Darnam stream, 1 ♂, 5. xi.1976, K. R. Rao ; Chamdur Valley, 1 ♂, 7.xi.1976, K. R. Rao. Chhiahttang, 925 m, 3 ♂, 8.xi.1976, K. R. Rao ; Bank of Tlawng river, Zobawk, 1 ♂, 12.xi.1976, K. R. Rao .

Distribution: India: Celyon; Nepal to Vietnam in the east.